The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 2013
Filed:
Dec. 10, 2010
Yugo Mochizuki, Kawasaki, JP;
Akitoshi Yamada, Yokohama, JP;
Fumitaka Goto, Tokyo, JP;
Tomokazu Ishikawa, Kawasaki, JP;
Takashi Nakamura, Yokohama, JP;
Okinori Tsuchiya, Yokohama, JP;
Akihiko Nakatani, Kawasaki, JP;
Mitsuhiro Ono, Tokyo, JP;
Ayumi Sano, Kawasaki, JP;
Takashi Fujita, Kawasaki, JP;
Hidetsugu Kagawa, Kawasaki, JP;
Fumihiro Goto, Kawasaki, JP;
Yugo Mochizuki, Kawasaki, JP;
Akitoshi Yamada, Yokohama, JP;
Fumitaka Goto, Tokyo, JP;
Tomokazu Ishikawa, Kawasaki, JP;
Takashi Nakamura, Yokohama, JP;
Okinori Tsuchiya, Yokohama, JP;
Akihiko Nakatani, Kawasaki, JP;
Mitsuhiro Ono, Tokyo, JP;
Ayumi Sano, Kawasaki, JP;
Takashi Fujita, Kawasaki, JP;
Hidetsugu Kagawa, Kawasaki, JP;
Fumihiro Goto, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
When a gradation mask is used to distribute image data to be recorded by overlapping portions in an overlapping head, color unevenness is generated in an image recorded by the overlapping portions due to a displacement in impact positions caused by an assembly error. As a result, accurate colorimetric measurement of patches recorded by the overlapping portion cannot be performed. To solve such a problem, a distribution ratio by which the image data is distributed to the overlapping portions is set to be approximately constant when recording a test pattern for performing color correction, as compared to when normally recording the image.